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Thread: Getting to 408 CID
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11-19-2006, 04:51 PM #1
Getting to 408 CID
I realize that you need a 4.000" Bore and 4.000" Stroke for a 402 setup and a 4.030" Bore and 4.000" Stroke for a 408, both with a 6.125" connecting rod.
When buying a LQ9 Block with a 4.000" x 4.000" setup how do you get to 4.030" x 4.000"? Do you have to resleeve or can you just simply bore 0.030" over? To my understanding the LQ9 is the exact same setup to a LS1 other than the LS1's 3.898" bore and aluminium construction. Are all of the sensors the same and would I have any problems transplanting it into an F-body? Am I correct or am I all FUBAR'd?
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11-19-2006, 07:10 PM #2
No sleeving will be needed for .030." over.
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11-19-2006, 07:23 PM #3
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Bingo.
Simple bore. Wouldn't go higher than .030 over though.
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11-20-2006, 03:45 AM #4
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Yup....^^^^
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11-20-2006, 10:06 PM #5
Thanks for the input on the boring. I was hoping that is what the case would be. What about the differences between LQ9 and LS1?
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11-21-2006, 04:31 AM #6
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LQ9 is a iron block from a truck....LS1 is an aluminum block....you can bore the iron with less space between the cylinders than you can an aluminum block...
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